21-3t=45-9t

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Solution for 21-3t=45-9t equation:


Simplifying
21 + -3t = 45 + -9t

Solving
21 + -3t = 45 + -9t

Solving for variable 't'.

Move all terms containing t to the left, all other terms to the right.

Add '9t' to each side of the equation.
21 + -3t + 9t = 45 + -9t + 9t

Combine like terms: -3t + 9t = 6t
21 + 6t = 45 + -9t + 9t

Combine like terms: -9t + 9t = 0
21 + 6t = 45 + 0
21 + 6t = 45

Add '-21' to each side of the equation.
21 + -21 + 6t = 45 + -21

Combine like terms: 21 + -21 = 0
0 + 6t = 45 + -21
6t = 45 + -21

Combine like terms: 45 + -21 = 24
6t = 24

Divide each side by '6'.
t = 4

Simplifying
t = 4

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